Showing 1 - 10 of 37
I quantify spillovers of attention in a network of content pages, which is challenging, because such networks form endogenously. I exploit exogenous variation in the article network of German Wikipedia to circumvent this problem. Wikipedia prominently advertises one featured article on its main...
Persistent link: https://www.econbiz.de/10011139789
Peer influence through word-of-mouth (WOM) plays an important role in many information systems but identification of causal effects is challenging. We identify causal WOM effects in the empirical setting of game adoption in a social network for gamers by exploiting differences in individuals'...
Persistent link: https://www.econbiz.de/10011139791
Endogeneity in network formation hinders the identification of the role social networks play in generating spillovers, peer effects and other externalities. This paper tackles this problem and investigates how the link network between articles on the German Wikipedia influences the attention and...
Persistent link: https://www.econbiz.de/10010957727
We develop a model of R&D competition between an incumbent and a potential entrant with network externalities and durable goods. We show that the threat of entry eliminates the commitment problem that an incumbent may face in its R&D decision due to the goods? durability. Moreover, a potential...
Persistent link: https://www.econbiz.de/10005097721
This paper analyzes the impact of network externalities on R&D competition between an incumbent and a potential entrant. The analysis shows that the incumbent always invests more than the entrant in the development of higher quality network goods. However, the incumbent exhibits a too low level...
Persistent link: https://www.econbiz.de/10005097740
This paper studies the incentives to undertake uncertain R&D initiatives in a dynamic duopoly network industry. It is shown that network externalities positively affect the incentives to invest in R&D. In the model, competition resembles a preemption race and, therefore, market performance...
Persistent link: https://www.econbiz.de/10005098390
The Mannheim Enterprise Panel (Mannheimer Unternehmenspanel - MUP) of the Centre for European Economic Research (ZEW) is the most comprehensive micro database of companies in Germany outside the official business register (which is not accessible to the public). The MUP is based on the firm data...
Persistent link: https://www.econbiz.de/10011097463
The contribution of different-sized businesses to job creation continues to attract policymakers' attention, however, it has recently been recognized that conclusions about size were confounded with the effect of age. We probe the role of size, controlling for age, by comparing the cohorts of...
Persistent link: https://www.econbiz.de/10011095352
This paper presents the results of a calculation model for biofuel production costs in 2015 and 2020 based on raw material price projections and considering scale and learning effects. Distinguishing six types of biofuels, the paper finds that scale economies and learning effects are critical...
Persistent link: https://www.econbiz.de/10010985632
One way through which knowledge and technology transfer can take place is through the foundation of new firms by former employees of incumbent private firms. In this paper, we examine whether knowledge transferred from the incumbent causally affect employment growth and postentry innovation...
Persistent link: https://www.econbiz.de/10010985635